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MU9C1485L-90TCC Datasheet

  • MU9C1485L-90TCC

  • WidePort LANCAM㈢ Family

  • 161.81KB

  • 28页

  • MUSIC

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Preliminary Data Sheet
WidePort LANCAM
庐
Family
APPLICATION BENEFITS
Enhances Ethernet and Token-Ring LAN bridges
and switches:
脴
64-bit width stores 48-bit MAC address plus
associated data (Port ID, time stamp,
鈥減ermanent鈥?flag)
脴
32-bit I/O supports multiple ports of fast
(100 Mb) Ethernet or Gigabit Ethernet
脴
Station list depth flexibility with choice of
pin-compatible device densities and
glue-free cascading
脴
3.3 Volt option for low power systems
脴
Industrial temperature grades for harsh
environments
DISTINCTIVE CHARACTERISTICS
脴
4096 (4485A/L), 2048 (2485A/L), and 1024
(1485A/L) word CMOS content-addressable
memories (CAMs)
脴
64-bit word width
脴
32-bit I/O compatible with the MU9C1485
脴
Fast 50 ns compare speed
脴
Dual configuration register set for rapid
context switching
脴
Increased flexibility of MUSIC鈥檚 patented
CAM/RAM partitioning
脴
80-pin TQFP package with the same pinout as
the MU9C1485 and MU9C1965A/L
脴
5 volt (A) or 3.3 volt (L) operation
(3 2 )
M UX
D ATA (6 4 )
I/ O B U FF E R S
DQ 3 1 鈥?0
(3 2 )
(3 2 )
TRA N S L A TE
(8 02 .3 /8 0 2 .5 )
DE M U X
D ATA (6 4 )
(3 2 )
S O U R CE AN D
D E S TINA TIO N
S EG M ENT
C O U N TE R S
C O M P AR A ND
M AS K R E G IS TE R 1
M AS K R E G IS TE R 2
3 2 K o r 1 6 K X 2 V AL ID I TY B ITS
C O MM AN D S
& S TA TU S
AD D R E S S D E C O D E R
/W
/E
/CM
/EC
/R E S E T
17/ 16
/M A
P R I OR I TY E N CO D E R
/M M
2
CO NT RO L
LO G I C
CO NT RO L
AND S T AT US
RE G IS T ER S
CAM A RR AY
3 2 K or 1 6 K
W O RD S
X 6 4 B ITS
15/ 14
/ FF
F LA G
L O G IC
/ FI
/M F
/M I
Block Diagram
LANCAM, the MUSIC logo, and the phrase 鈥淢USIC Semiconductors鈥?are registered trademarks of MUSIC Semiconductors. MUSIC is
a trademark of MUSIC Semiconductors. Certain features of this device are patented under US Patent 5,383,146.
2 December 1998 Rev. 2

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